A decorative panel assembly structure

Abstract

The utility model relates to a convenient to dismount's decorative board assembly structure, the existing hanging type decorative board is troublesome to dismount, influences use experience, the utility model discloses a keel assembly and install the decorative board group at the bottom of keel assembly, the bottom of keel assembly is equipped with the horizontal to the open hanging groove, the decorative board group is horizontally inserted in the corresponding hanging groove through the hanging piece, and the movable gap is reserved between the adjacent decorative board group, and the decorative strip is arranged at the movable gap, so that the movable gap is covered by the decorative strip. The movable gap that can be covered by the decorative strip is reserved between the adjacent decorative board group, and the decorative board group is conveniently independently disassembled through the movable gap, without disassembling the adjacent decorative board group, effectively improving the dismounting efficiency, facilitating maintenance, and improving the use experience.

Description

Technical Field

[0001] This utility model relates to the field of integrated ceilings, specifically to an assembly structure for decorative panels. Background Technology

[0002] Existing integrated ceilings include a keel assembly fixed to the ceiling and decorative panels installed at the bottom of the keel assembly. The decorative panels are flat and spliced ​​together to form a decorative surface that covers the ceiling. The decorative panels can be hung below the keel assembly via hangers. The keel assembly includes keel rods with hanging grooves on the bottom surface. The decorative panels are hung in the corresponding hanging grooves via hangers on their top surfaces. The hangers of adjacent decorative panels are tightly spliced ​​by sharing the hanging grooves. The installation of the decorative panels requires sequential installation in a specific direction. When it is necessary to remove a particular decorative panel, because the adjacent decorative panels are tightly fitted, there is no space for moving and removing a single decorative panel. The decorative panels must be removed sequentially in a specific direction, making the removal and maintenance of the decorative panels troublesome and affecting the user experience. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a convenient assembly structure for decorative panel groups. An movable gap, which can be covered by decorative strips, is reserved between adjacent decorative panel groups, allowing for independent assembly and disassembly of the decorative panel groups without the need to disassemble adjacent decorative panel groups. This effectively improves assembly and disassembly efficiency, facilitates maintenance, and enhances the user experience.

[0004] This utility model is achieved through the following method: a convenient assembly structure for decorative panels, including a keel assembly and decorative panel assemblies installed at the bottom of the keel assembly. The bottom of the keel assembly has a horizontally exposed hanging groove. The decorative panel assemblies are horizontally inserted into the corresponding hanging grooves by hangers. A movable gap is reserved between adjacent decorative panel assemblies, and a decorative strip is provided at the movable gap to cover the gap. The movable gap, which can be covered by the decorative strip, provides space for the assembly and disassembly of the decorative panel assemblies, allowing them to be disassembled independently without disassembling adjacent panels, effectively improving assembly and disassembly efficiency and facilitating maintenance. Furthermore, the decorative strip enhances aesthetics by covering the gap and provides horizontal restraint to the decorative panel assemblies, preventing them from detaching from the keel assembly due to horizontal displacement, ensuring reliable connection and improving the user experience.

[0005] Preferably, the decorative panel assembly includes a connecting plate at its edge and at least one unit plate. The connecting plate forms the movable gap with the corresponding unit plate of the adjacent decorative panel assembly. The decorative strip is connected to the hanger on the adjacent unit plate via a connector, so that the decorative strip is suspended between adjacent decorative panel assemblies and completely covers the movable gap. The decorative panel assembly consists of at least one unit plate and a connecting plate assembly at its edge. The width of the unit plate matches the distance of the hanging groove. The connecting plate reserves space for the movable gap by reducing its width, which ensures that the unit plate and connecting plate can be separated from the keel assembly by horizontal movement, and also provides installation space for the decorative strip. The decorative strip serves to cover the movable gap and restrict the horizontal movement of the decorative panel assembly.

[0006] Preferably, the decorative strip has an upward-facing lower slot at the center of its top surface, and the hanger has a horizontally exposed upper slot. The connector is L-shaped, with its top end horizontally inserted into the upper slot and its bottom end vertically inserted into the lower slot, thus fixing the relative position between the decorative strip and the decorative panel assembly. The top and bottom ends of the connector, respectively inserted into the upper and lower slots, ensure that the decorative strip can be fixed to the corresponding hanger at a predetermined position, effectively concealing any gaps and limiting the horizontal movement of the decorative panel assembly. The horizontal placement of the top end of the connector not only effectively inserts the hanger hidden on the unit panel but also improves load-bearing reliability.

[0007] Preferably, the width of the decorative strip is greater than the width of the movable gap, and the bottom of the decorative strip forms a decorative part located below the decorative panel assembly. The top surface of the decorative part forms support platforms on both sides for the corresponding edges of the connecting plate and the unit plate to overlap. The support platforms on both sides of the top of the decorative strip serve to both shield the edges of the unit plate and the connecting plate and to support them, thus improving the reliability of the support for the decorative panel assembly.

[0008] Preferably, the width of the decorative strip matches the width of the movable gap, and the decorative strip is embedded within the movable gap to ensure a smooth connection between the bottom surfaces of the decorative strip, the unit panel, and the connecting plate. The decorative strip is completely concealed within the movable gap, and has a flat bottom surface. After installation, the bottom surfaces of the decorative strip, the unit panel, and the connecting plate are smoothly connected, effectively enhancing the aesthetics.

[0009] Preferably, the keel assembly includes a keel rod suspended below the ceiling. The bottom surface of the keel rod has recessed grooves that are equidistantly spaced and have the same orientation. Each groove has an opening and a cavity. The hanger is vertically inserted into the opening and horizontally moved into the cavity, so that the decorative panel assembly is suspended below the keel rod by the hanger. The keel rod is horizontally positioned to provide hoisting and positioning for the decorative panel assembly. The bottom of the keel rod has a groove for the hanger to be attached. The opening allows the hanger to be vertically inserted into the groove, and the bottom wall of the cavity supports the hanger, so that the weight of the decorative panel assembly and decorative strips is transferred to the bottom wall of the cavity, and then to the ceiling through the keel assembly.

[0010] Preferably, the opening is formed by an upward indentation of the hanging groove, and the sidewall of the opening is horizontally recessed to form the cavity, so that the bottom wall of the cavity forms a supporting surface for supporting the hanging item. The opening is located above the groove, and the vertical projections of the cavity and the opening are offset, so that the bottom wall of the cavity forms a supporting surface that can withstand force.

[0011] Preferably, the hanger includes a lower horizontal part that is fitted and fixed to the decorative panel assembly, an upper horizontal part that can be inserted into the cavity, and a connecting part that spans between the corresponding end edges of the lower and upper horizontal parts. The upper horizontal part vertically passes through the opening and is horizontally inserted into the cavity so that it overlaps the bottom wall of the cavity. The lower horizontal part is fitted to the unit panel or connecting plate and fixed by fasteners. The upper horizontal part is used to insert into the hanging groove and overlap on the supporting surface, ensuring that the unit panel and connecting plate can be stably suspended below the keel rod, thereby forming a flat decorative surface.

[0012] Preferably, the cavity is shaped with a large opening and a small interior. The upper horizontal part is inserted into the cavity and clamped and locked. The height of the cavity near the opening is greater than the height away from the opening. The top wall of the cavity is inclined, which not only guides the upper horizontal part into the cavity, but also clamps and fixes the inserted upper horizontal part, preventing the upper horizontal part from horizontally detaching from the opening.

[0013] Preferably, the connection between the cavity and the opening is flared to guide the pendant into the cavity. The opening of the cavity faces the opening, and the height of the opening does not exceed the height of the opening, ensuring that the upper horizontal part can slide into the cavity along the wall of the opening, effectively reducing resistance and improving the ease of assembly and disassembly.

[0014] Preferably, the hanger includes a Z-shaped male component and a C-shaped female component. Adjacent unit plates and unit plates and connecting plates are installed by the male and female components. The bottom wall of the cavity near the opening is provided with a receiving groove. The upper horizontal part of the female component overlaps with the upper horizontal part of the male component and is embedded and hidden in the receiving groove, so that adjacent unit plates are hung, fixed and flush. There are two types of hangers, including a Z-shaped male component and a C-shaped female component. The male component is usually used to connect the unit plates and connecting plates with the corresponding hanging groove. The female component is used at the edge of the joint between adjacent unit plates and between the unit plates and the connecting plates, so that the upper horizontal part of the female component and the workpiece can be stacked and share the same hanging groove, ensuring a tight fit between unit plates and between unit plates and connecting plates.

[0015] Preferably, the width of the movable gap is greater than the horizontal movement distance of the upper horizontal part within the groove cavity, so that the hanger can be placed on the support surface through the upper horizontal part. The wider movable gap provides space for the horizontal movement of the hanger, ensuring that the upper horizontal part can switch between a hooked state in the insertion cavity and an unlocked state when moved to the opening.

[0016] Preferably, the width of the slot is greater than the width of the upper horizontal part, so that the upper horizontal part passes through the slot in a horizontal position, improving the ease of assembly and disassembly.

[0017] The beneficial effects of this utility model are as follows: A movable gap, which can be concealed by a decorative strip, is reserved between adjacent decorative panel groups. This gap provides space for the assembly and disassembly of the decorative panel groups, allowing them to be disassembled independently without disassembling adjacent groups, effectively improving assembly and disassembly efficiency and facilitating maintenance. Furthermore, the decorative strip conceals the gap, enhancing aesthetics. Additionally, the strip, inserted within the gap, horizontally limits the decorative panel groups, preventing them from detaching from the keel assembly due to horizontal displacement, ensuring reliable connection and improving the user experience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the assembly structure of the decorative panel assembly;

[0019] Figure 2 This is a partial disassembly diagram of the decorative panel assembly;

[0020] Figure 3 This is a partial structural diagram of the keel rod;

[0021] Figure 4 This is a structural schematic diagram of the component;

[0022] Figure 5 This is a schematic diagram of the structure of the parent component;

[0023] Figure 6 This is a schematic diagram of the assembly structure of the connecting plate and the unit plate;

[0024] Figure 7 This is a schematic diagram of the structure of the decorative strip;

[0025] In the diagram: 1. Keel rod, 2. Hanging groove, 3. Movement gap, 4. Decorative strip, 5. Unit panel, 6. Connecting plate, 7. Lower slot, 8. Upper slot, 9. Connector, 10. Support platform, 11. Decorative part, 12. Mouth, 13. Cavity, 14. Lower horizontal part, 15. Upper horizontal part, 16. Connecting part, 17. Male part, 18. Female part, 19. Receiving groove. Detailed Implementation

[0026] The essential features of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 The illustrated decorative panel assembly structure facilitates easy assembly and disassembly. It comprises a keel assembly and decorative panel assemblies installed at the bottom of the keel assembly. The bottom of the keel assembly has horizontally exposed hanging grooves 2. The decorative panel assemblies are horizontally inserted into the corresponding hanging grooves 2 via hangers. A movable gap 3 is reserved between adjacent decorative panel assemblies, and a decorative strip 4 is installed at the movable gap 3 to conceal it. This movable gap 3, which can be concealed by the decorative strip 4, provides space for the assembly and disassembly of the decorative panel assemblies, allowing them to be disassembled independently without disassembling adjacent panels, effectively improving assembly and disassembly efficiency and facilitating maintenance. Furthermore, the decorative strip 4 conceals the movable gap 3, enhancing aesthetics, and also horizontally limits the decorative panel assemblies, preventing them from detaching from the keel assembly due to horizontal displacement, ensuring reliable connection and improving the user experience.

[0028] In practice, a movable gap of 3 is set between adjacent decorative panel groups (e.g., Figure 2As shown, this design allows each decorative panel group to be independently disassembled and assembled without needing to disassemble adjacent decorative panel groups. This effectively reduces the workload of disassembly and maintenance and prevents damage caused by disassembling adjacent decorative panel groups, thus protecting the decorative panel groups. Each decorative panel group includes a connecting plate 6 located at its edge and at least one unit plate 5. The unit plate 5 is a uniformly sized panel. The coverage area of ​​a single decorative panel group can be adjusted by increasing or decreasing the number of unit plates 5. Increasing the number of unit plates 5 increases the coverage area of ​​a single decorative panel group. Reducing the number of movable gaps 3 decreases the density of decorative strips 4, improving aesthetics. Conversely, decreasing the number of unit plates 5 increases the density of movable gaps 3, thereby reducing the workload of disassembly and assembly of each decorative panel group and improving disassembly and maintenance efficiency. The number of unit plates 5 within each decorative panel group can be increased or decreased according to actual conditions, and all such adjustments should be considered specific embodiments of this utility model.

[0029] In actual operation, the connecting plate 6 forms the movable gap 3 between the corresponding unit plate 5 of the adjacent decorative panel group. The decorative strip 4 is connected to the hanger on the adjacent unit plate 5 through the connector 9, so that the decorative strip 4 is suspended between the adjacent decorative panel groups and completely covers the movable gap 3. The keel rod 1 is provided with equally spaced hanging grooves 2. The width of the unit plate 5 is an integer multiple of the distance between adjacent grooves, ensuring that the unit plate 5 can be hung with the hanging groove 2 through the hanger with a fixed position, which facilitates the installation of the hanger on the unit plate 5. The width of the connecting plate 6 is smaller than that of the unit plate 5. The distance between adjacent unit plates 5 of adjacent decorative panel groups meets the requirements for installing the connecting plate 6 and the decorative strip 4. The movable gap 3 is formed by the connecting plate 6 and the unit plates 5 in the adjacent decorative panel group. Then, the decorative panel group is disassembled by disassembling the decorative strip 4, the connecting plate 6 and the unit plate 5 in sequence.

[0030] During assembly, firstly, each unit panel 5 in the decorative panel group is hung and installed sequentially from far to near according to the distance between it and the connecting plate 6. Then, the connecting plate 6 is installed in place and tightly fitted with the adjacent unit panel 5. At this time, the movable gap 3 is formed between the connecting plate 6 and the adjacent decorative panel group. Finally, the decorative strip 4 is inserted into the movable gap 3 and the connecting plate 6 is horizontally locked and positioned.

[0031] After installation, the decorative strip 4 serves to cover the movement gap 3, and also supports and holds the connecting plate 6 in place. The decorative strip 4 horizontally limits the connecting plate 6, preventing the hangers of the connecting plate 6 from horizontally detaching from the hanging groove 2. This, in turn, horizontally limits the adjacent unit plate 5, preventing the hangers of the unit plate 5 from horizontally detaching from the hanging groove 2. The vertically detachable decorative strip 4 horizontally limits the connecting plate 6 and the unit plate 5, thus ensuring that the decorative panel assembly is firmly installed on the keel assembly. Furthermore, the corresponding decorative strip 4 can be removed to independently disassemble and assemble each decorative panel assembly, improving maintenance efficiency.

[0032] When individual panels need to be disassembled, first, identify the decorative panel group to which the panel belongs; then, remove the decorative strip 4 corresponding to that decorative panel group to create a movable gap 3 for disassembly; next, the connecting plate 6 is moved horizontally into the movable gap 3 to separate from the keel assembly; finally, remove each unit panel 5 sequentially until the target panel is removed. Each decorative panel group can be disassembled and assembled independently without disassembling adjacent decorative panel groups, effectively reducing the workload of disassembly and assembly and improving the user experience.

[0033] In actual operation, the decorative strip 4 has an upward-facing lower slot 7 at the center of its top surface, and the hanging piece has a horizontally exposed upper slot 8. The connector 9 is L-shaped, with its top end horizontally inserted into the upper slot 8 and its bottom end vertically inserted into the lower slot 7, thus fixing the relative position between the decorative strip 4 and the decorative panel assembly. Limiting rings are provided on the top and bottom ends of the connector 9 to ensure that they are tightly inserted into the upper slot 8 and lower slot 7, preventing them from falling off.

[0034] In actual operation, the width of the decorative strip 4 is greater than the width of the movable gap 3, and the bottom of the decorative strip 4 forms a decorative part 11 located below the decorative panel assembly (e.g., Figure 7 As shown, the top surface of the decorative part 11 forms support platforms 10 on both sides for the corresponding edges of the connecting plate 6 and the unit plate 5 to overlap. The support platforms 10 support and shield the edges of the connecting plate 6 and the unit plate 5. In addition, the width of the decorative strip 4 matches the width of the movable gap 3, and the decorative strip 4 is embedded in the movable gap 3 so that the bottom surfaces of the decorative strip 4, the unit plate 5, and the connecting plate 6 are smoothly connected. This should also be considered a specific embodiment of this utility model.

[0035] In actual operation, the keel assembly includes a keel rod 1 suspended below the ceiling. The bottom surface of the keel rod 1 is recessed to form equidistant hanging grooves 2 with the same orientation. The groove 2 includes an opening 12 and a cavity 13 (e.g., ...). Figure 3 As shown, the hanger is vertically inserted into the opening 12 and horizontally moved into the cavity 13, so that the decorative panel assembly is suspended below the keel rod 1 by the hanger. The opening 12 is formed by the upward indentation of the groove 2, and the side wall of the opening 12 forms the cavity 13 by horizontal indentation, so that the bottom wall of the cavity 13 forms a supporting surface for the hanger. During installation, the hanger is fixed to the top surface of the corresponding panel by the lower horizontal part 14, and the upper horizontal part 15 passes through the groove from bottom to top in a horizontal posture and is set at the same height as the cavity opening of the cavity 13. Then, the upper horizontal part 15 is horizontally moved into the cavity 13 and locked in place, so that the upper horizontal part 15 remains in a horizontal posture within the cavity 13.

[0036] In practice, the hanger includes a Z-shaped male component 17 (such as...). Figure 4 As shown), the male component 17 includes a lower horizontal portion 14 that is fixedly attached to the decorative panel assembly, an upper horizontal portion 15 that can be inserted into the cavity 13, and a connecting portion 16 that spans between the corresponding end edges of the lower horizontal portion 14 and the upper horizontal portion 15. The upper horizontal portion 15 vertically passes through the opening 12 and is horizontally inserted into the cavity 13 so that the upper horizontal portion 15 overlaps the bottom wall of the cavity 13. The hanging component also includes a female component 18 in the shape of a chamfer (e.g., Figure 5 As shown), the female component 18 includes an upper horizontal portion 15, a lower horizontal portion 14, and a connecting portion 16. Adjacent unit plates 5 and unit plates 5 and connecting plates 6 are installed through the cooperation of male component 17 and female component 18. The bottom wall of the cavity 13 near the opening 12 is provided with a receiving groove 19. The upper horizontal portion 15 of the female component 18 and the upper horizontal portion 15 of the male component 17 are stacked and embedded in the receiving groove 19 (as shown). Figure 6 As shown), so that adjacent unit panels 5 are all hung, fixed and aligned. Male parts 17 and female parts 18 are provided at the corresponding edges between adjacent unit panels 5 and between unit panels 5 and connecting plates 6. The upper horizontal part 15 of male parts 17 is stacked on top of the upper horizontal part 15 of female parts 18. The two are stacked and inserted together into the cavity 13 of the same hanging groove 2. By sharing the same hanging groove 2, the distance between the panels is reduced, thereby ensuring that adjacent panels fit tightly together.

[0037] In actual operation, the upper slot 8 is provided on the connecting part 16 so that the decorative strip 4 is fixed to the hanging part by the connector 9.

[0038] In actual operation, the cavity 13 is shaped with a large opening and a small cavity. The upper horizontal part 15 is inserted into the cavity 13 and clamped and locked to ensure that the hanging part maintains the preset posture, thereby ensuring that the corresponding plate maintains the posture and facilitating the flush splicing of adjacent plates.

[0039] In actual operation, the connection between the cavity 13 and the opening 12 is flared to guide the pendant into the cavity 13, effectively reducing the moving resistance of the upper horizontal part 15 and facilitating insertion, removal and disassembly operations.

[0040] In actual operation, the width of the movable gap 3 is greater than the horizontal movement distance of the upper horizontal part 15 within the groove cavity, so that the hanger can be placed on the supporting surface through the upper horizontal part 15, ensuring that the horizontal movement distance of the hanger within the movable gap 3 meets the requirement of the upper horizontal part 15 detaching from the cavity 13 to the opening 12. The width of the groove is greater than the width of the upper horizontal part 15, so that the upper horizontal part 15 passes through the groove in a horizontal posture, ensuring that the unit plate 5 and the connecting plate 6 can be raised and lowered horizontally.

Claims

1. A decorative panel assembly structure for easy assembly and disassembly, comprising a keel assembly and a decorative panel assembly installed at the bottom of the keel assembly, characterized in that, The bottom of the keel assembly is provided with a horizontally exposed hanging groove (2). The decorative panel group is horizontally inserted into the corresponding hanging groove (2) by a hanger. An movable gap (3) is reserved between adjacent decorative panel groups. A decorative strip (4) is provided at the movable gap (3) so that the movable gap (3) is covered by the decorative strip (4).

2. The easily detachable and assembleable decorative panel assembly structure according to claim 1, characterized in that, The decorative panel group includes a connecting plate (6) located at its edge and at least one unit plate (5). The connecting plate (6) forms the movable gap (3) between the corresponding unit plate (5) of the adjacent decorative panel group. The decorative strip (4) is connected to the hanger on the adjacent unit plate (5) through the connector (9) so that the decorative strip (4) is suspended between the adjacent decorative panel groups and completely covers the movable gap (3).

3. The easily detachable and assembleable decorative panel assembly structure according to claim 2, characterized in that, The decorative strip (4) has an upward-facing lower slot (7) in the middle of its top surface, and the hanging piece has a horizontally exposed upper slot (8). The connector (9) is L-shaped, with its top end horizontally inserted into the upper slot (8) and its bottom end vertically inserted into the lower slot (7) to fix the relative position between the decorative strip (4) and the decorative panel assembly.

4. The easily detachable and assembleable decorative panel assembly structure according to claim 3, characterized in that, The width of the decorative strip (4) is greater than the width of the movable gap (3). The bottom of the decorative strip (4) forms a decorative part (11) located below the decorative panel group. The top surface of the decorative part (11) forms support platforms (10) on both sides for the corresponding edges of the connecting plate (6) and the unit plate (5) to overlap. Alternatively, the width of the decorative strip (4) matches the width of the movable gap (3). The decorative strip (4) is embedded in the movable gap (3) so that the bottom surfaces of the decorative strip (4), the unit plate (5) and the connecting plate (6) are connected smoothly.

5. The easily detachable and assembleable decorative panel assembly structure according to any one of claims 1-4, characterized in that, The keel assembly includes a keel rod (1) suspended below the ceiling. The bottom surface of the keel rod (1) is recessed to form equidistant hanging grooves (2) with the same orientation. The groove of the hanging groove (2) includes an opening (12) and a cavity (13). The hanger is vertically inserted into the opening (12) and horizontally moved into the cavity (13) so that the decorative panel assembly is suspended below the keel rod (1) by the hanger.

6. The easily detachable and assembleable decorative panel assembly structure according to claim 5, characterized in that, The opening (12) is formed by the upward indentation of the groove (2), and the side wall of the opening (12) is formed by the horizontal indentation to form the cavity (13), so that the bottom wall of the cavity (13) forms a supporting surface for supporting the hanging item.

7. The easily detachable and assembleable decorative panel assembly structure according to claim 6, characterized in that, The pendant includes a lower horizontal part (14) that is fixedly attached to the decorative panel assembly, an upper horizontal part (15) that can be inserted into the cavity (13), and a connecting part (16) that spans between the corresponding end edges of the lower horizontal part (14) and the upper horizontal part (15). The upper horizontal part (15) passes vertically through the opening (12) and is inserted horizontally into the cavity (13) so that the upper horizontal part (15) overlaps the bottom wall of the cavity (13).

8. The easily detachable and assembleable decorative panel assembly structure according to claim 7, characterized in that, The cavity (13) is shaped with a large opening and a small cavity, and the upper horizontal part (15) is inserted into the cavity (13) and clamped and locked; or, the connection between the cavity (13) and the opening (12) is flared to guide the pendant into the cavity (13).

9. The easily detachable and assembleable decorative panel assembly structure according to claim 7, characterized in that, The hanging component includes a Z-shaped male component (17) and a C-shaped female component (18). Adjacent unit plates (5) and unit plates (5) and connecting plates (6) are installed by the male component (17) and the female component (18). The bottom wall of the cavity (13) near the opening (12) is provided with a receiving groove (19). The upper horizontal part (15) of the female component (18) and the upper horizontal part (15) of the male component (17) are stacked and embedded in the receiving groove (19) so that the adjacent unit plates (5) are all hung and fixed and are aligned.

10. The easily detachable and assembleable decorative panel assembly structure according to claim 7, characterized in that, The width of the movable gap (3) is greater than the horizontal movement distance of the upper horizontal part (15) in the groove cavity, so that the hanger can be attached to the support surface through the upper horizontal part (15); or, the width of the groove is greater than the width of the upper horizontal part (15), so that the upper horizontal part (15) passes through the groove in a horizontal posture.

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